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BULLETIN
HURRICANE IRENE INTERMEDIATE ADVISORY NUMBER  27B
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL092011
300 AM EDT SAT AUG 27 2011

...CENTER OF IRENE MOVING TOWARD THE NORTH CAROLINA OUTER BANKS...


SUMMARY OF 300 AM EDT...0700 UTC...INFORMATION
----------------------------------------------
LOCATION...33.7N 76.5W
ABOUT 60 MI...100 KM S OF CAPE LOOKOUT NORTH CAROLINA
ABOUT 120 MI...190 KM SSW OF CAPE HATTERAS NORTH CAROLINA
MAXIMUM SUSTAINED WINDS...90 MPH...150 KM/H
PRESENT MOVEMENT...NNE OR 20 DEGREES AT 14 MPH...22 KM/H
MINIMUM CENTRAL PRESSURE...952 MB...28.11 INCHES


WATCHES AND WARNINGS
--------------------
CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...

NONE.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT...

A HURRICANE WARNING IS IN EFFECT FOR...
* LITTLE RIVER INLET NORTH CAROLINA NORTHWARD TO SAGAMORE BEACH
MASSACHUSETTS...INCLUDING THE PAMLICO...ALBEMARLE...AND CURRITUCK
SOUNDS...DELAWARE BAY...CHESAPEAKE BAY SOUTH OF DRUM POINT...NEW
YORK CITY...LONG ISLAND...LONG ISLAND SOUND...COASTAL CONNECTICUT
AND RHODE ISLAND...BLOCK ISLAND...MARTHAS VINEYARD AND NANTUCKET

A TROPICAL STORM WARNING IS IN EFFECT FOR...
* NORTH OF EDISTO BEACH SOUTH CAROLINA TO LITTLE RIVER INLET
* CHESAPEAKE BAY FROM DRUM POINT NORTHWARD AND THE TIDAL POTOMAC
* NORTH OF SAGAMORE BEACH TO MERRIMACK RIVER

A TROPICAL STORM WATCH IS IN EFFECT FOR...
* MERRIMACK RIVER TO EASTPORT MAINE

INTERESTS IN SOUTHEASTERN CANADA SHOULD MONITOR THE PROGRESS OF
IRENE.

FOR STORM INFORMATION SPECIFIC TO YOUR AREA IN THE UNITED
STATES...INCLUDING POSSIBLE INLAND WATCHES AND WARNINGS...PLEASE
MONITOR PRODUCTS ISSUED BY YOUR LOCAL NATIONAL WEATHER SERVICE
FORECAST OFFICE. FOR STORM INFORMATION SPECIFIC TO YOUR AREA OUTSIDE
THE UNITED STATES...PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL
METEOROLOGICAL SERVICE.


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
AT 300 AM EDT...0700 UTC...THE CENTER OF HURRICANE IRENE WAS
LOCATED BY AN AIR FORCE RESERVE HURRICANE HUNTER AIRCRAFT AND NOAA
DOPPLER RADAR NEAR LATITUDE 33.7 NORTH...LONGITUDE 76.5 WEST.
IRENE IS MOVING TOWARD THE NORTH-NORTHEAST NEAR 14 MPH...22 KM/H...
AND THIS GENERAL MOTION IS EXPECTED TO CONTINUE TODAY.  ON THE
FORECAST TRACK...THE CORE OF THE HURRICANE WILL APPROACH THE COAST
OF NORTH CAROLINA DURING THE NEXT SEVERAL HOURS AND PASS NEAR OR
OVER THE NORTH CAROLINA COAST LATER THIS MORNING.  THE HURRICANE IS
FORECAST TO MOVE NEAR OR OVER THE MID-ATLANTIC COAST TONIGHT AND
MOVE OVER SOUTHERN NEW ENGLAND ON SUNDAY.

DATA FROM THE HURRICANE HUNTER AIRCRAFT INDICATE THAT MAXIMUM
SUSTAINED WINDS HAVE DECREASED TO NEAR 90 MPH...150 KM/H...WITH
HIGHER GUSTS.  IRENE IS A CATEGORY ONE HURRICANE ON THE
SAFFIR-SIMPSON HURRICANE WIND SCALE.  LITTLE CHANGE IN STRENGTH IS
EXPECTED BEFORE IRENE REACHES THE COAST OF NORTH CAROLINA...AND
IRENE IS EXPECTED TO REMAIN NEAR THE THRESHOLD OF CATEGORY ONE AND
CATEGORY TWO STRENGTH.  SOME WEAKENING IS EXPECTED AFTER IRENE
REACHES THE COAST OF NORTH CAROLINA...BUT IRENE IS FORECAST TO
REMAIN A HURRICANE AS IT MOVES ALONG THE MID-ATLANTIC COAST ON
SUNDAY.

HURRICANE-FORCE WINDS EXTEND OUTWARD UP TO 90 MILES...150 KM...FROM
THE CENTER...AND TROPICAL-STORM-FORCE WINDS EXTEND OUTWARD UP TO
290 MILES...465 KM.  A NOAA C-MAN STATION AT CAPE LOOKOUT NORTH
CAROLINA RECENTLY REPORTED A SUSTAINED WIND OF 54 MPH...87 KM/H...
AND A WIND GUST OF 64 MPH...104 KM/H.  A WEATHERFLOW STATION IN FORT
MACON NORTH CAROLINA RECENTLY REPORTED A WIND GUST OF 74 MPH...120
KM/H.

THE MINIMUM CENTRAL PRESSURE RECENTLY REPORTED BY AN AIR FORCE
RESERVE HURRICANE HUNTER AIRCRAFT WAS 952 MB...28.11 INCHES.


HAZARDS AFFECTING LAND
----------------------
WIND...TROPICAL-STORM-FORCE WINDS WILL CONTINUE TO SPREAD INLAND
OVER THE SOUTHERN AND EASTERN PORTIONS OF THE WARNING AREA TODAY.
HURRICANE-FORCE WINDS ARE EXPECTED TO FIRST REACH THE HURRICANE
WARNING AREA DURING THE NEXT SEVERAL HOURS.  TROPICAL-STORM-FORCE
WINDS ARE EXPECTED TO BEGIN ALONG THE MID-ATLANTIC COAST LATER THIS
MORNING WITH HURRICANE CONDITIONS EXPECTED BY THIS AFTERNOON.
TROPICAL STORM CONDITIONS ARE EXPECTED TO REACH SOUTHERN NEW
ENGLAND TONIGHT WITH HURRICANE CONDITIONS EXPECTED ON SUNDAY.

STORM SURGE...AN EXTREMELY DANGEROUS STORM TIDE WILL RAISE WATER
LEVELS BY AS MUCH AS 6 TO 11 FEET ABOVE GROUND LEVEL IN THE
HURRICANE WARNING AREA IN NORTH CAROLINA...INCLUDING THE ALBEMARLE
AND PAMLICO SOUNDS. STORM SURGE WILL RAISE WATER LEVELS BY AS MUCH
AS 4 TO 8 FEET ABOVE GROUND LEVEL WITHIN THE HURRICANE WARNING AREA
FROM THE NORTH CAROLINA/VIRGINIA BORDER NORTHWARD TO CAPE COD
INCLUDING SOUTHERN PORTIONS OF THE CHESAPEAKE BAY AND ITS
TRIBUTARIES. NEAR THE COAST...THE SURGE WILL BE ACCOMPANIED BY
LARGE...DESTRUCTIVE...AND LIFE-THREATENING WAVES.  STORM SURGE
VALUES ARE VERY LOCATION-SPECIFIC...AND USERS ARE URGED TO CONSULT
PRODUCTS ISSUED BY THEIR LOCAL NATIONAL WEATHER SERVICE OFFICES.

RAINFALL...IRENE IS EXPECTED TO PRODUCE RAINFALL ACCUMULATIONS OF
6 TO 10 INCHES...WITH ISOLATED MAXIMUM AMOUNTS OF 15 INCHES...FROM
EASTERN NORTH CAROLINA NORTHWARD THROUGH THE MID-ATLANTIC STATES...
NEW YORK...AND NEW ENGLAND THROUGH MONDAY MORNING.  THESE RAINS
COULD CAUSE WIDESPREAD FLOODING AND LIFE-THREATENING FLASH FLOODS.

SURF...LARGE SWELLS GENERATED BY IRENE ARE AFFECTING PORTIONS OF THE
COAST OF THE SOUTHEASTERN UNITED STATES.  THESE SWELLS WILL CAUSE
LIFE-THREATENING SURF AND RIP CURRENT CONDITIONS.

TORNADOES...ISOLATED TORNADOES ARE POSSIBLE OVER EXTREME EASTERN
NORTH CAROLINA TODAY.  A POSSIBLE TORNADO WAS RECENTLY REPORTED IN
TYRRELL COUNTY NORTH CAROLINA.


NEXT ADVISORY
-------------
NEXT COMPLETE ADVISORY...500 AM EDT.

$$
FORECASTER BEVEN/BRENNAN



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